baber/WOPTO huggingface dataset:
Patent KR-20010028034-A (KR)
Inventor: KIM PIL HWAN
IPC: F04C18/02
Filed: 1999-09-17
Abstract: PURPOSE: A backflow prevention apparatus for scroll compressor is provided to reduce noise of the compressor by preventing a collision between the fixed scroll and the check valve. CONSTITUTION: A backflow prevention apparatus comprises a fixed scroll(51) engaged with a swirling scroll so as to form a plurality of compression pockets(P) and which has an outlet port(51a) for discharging the refrigerant gas compressed in the compression pocket; a cylindrical check valve housing(55) fixed onto the fixed scroll so as to accommodate the outlet port and which has a pressure hole(55a) and a discharge hole(55b) formed at the top surface and the side surface of the check valve housing, respectively; and a cylindrical check valve(53) arranged within the check valve housing in such a manner that the check valve moves in vertical direction in accordance with the discharge pressure of the refrigerant gas so as to open/shut the outlet port of the fixed scroll. The check valve housing is provided with a free space to allow the check valve to move in vertical direction from the discharge hole of the check valve housing, to thereby prevent a contact between the fixed scroll and the check valve caused by the downward movement of the check valve.
Patent KR-20010037325-A (KR)
Inventor: AHN SU MI
IPC: C07C69/84
Filed: 1999-10-15
Abstract: PURPOSE: A gallic acid ester compound, a preparation method thereof and a whitening cosmetic composition containing the same are provided, which has an excellent repression effect for melanin production. CONSTITUTION: A gallic acid ester compound is represented by formula(1), wherein R1 is hydroxy or C1-C4 linear chain or alkoxy of branched chain, R2, R3 are hydroxy, C1-C4 linear chain or alkoxy of branched chain or methylene dioxy independently, R4 is thymol. A preparation method thereof comprises the following steps: (i) manufacturing methyl ester compound by reacting gallic acid with methanol in the presence of acid catalyst; (ii) substituting hydroxy group of methyl ester compound produced in step (i); (iii) hydrolyzing hydroxy substituted methyl ester compound; (iv) reacting the acid compound produced in steps(iii) with thymol.
Patent KR-20000035052-A (KR)
Inventor: RANG HAROLD KASE
IPC: H01R12/72
Filed: 1999-10-20
Abstract: PURPOSE: A connector is provided to have low inductance suitable for an impedance matching with a related circuit assembly, and to have a high circuit density. CONSTITUTION: A connector comprises a lengthy housing formed by an electrical insulation material such as a high temperature thermoplastic. In the housing is provided a plurality of first terminal containing caves(44) and a plurality of second terminal containing caves adjacent to the first terminal containing caves(44) and by the same number as the caves(44). The first and second terminal containing caves(44) are divided by a dielectric division wall, and are extended in a width direction perpendicular to a slot(34) between side walls(34) of the housing. A lower portion of the slot(34) has a stop plane partially limited by a terminal holding wall in the cave, a spacer(54) in the cave(44), and a division wall(48). A reference terminal(60) is mounted in the cave(44), and a signal terminal is mounted in the cave. A lower portion of each of the first and second caves(44) has an inner side wall(58). The reference terminal(60) comprises a flat body(64) having a hold arm(66). The hold arm(66) has a barbs(68) coupled with the inner side wall(58). A pair of substrate contact portions(72) are extended upward from the body(64).
Patent KR-20000000429-A (KR)
Inventor: LEE YEO JUN
IPC: A01K61/00
Filed: 1999-10-21
Abstract: PURPOSE: A culturing method of a pearl having nucleus is provided to reduce the expenses compared to the existing pearl culturing method, to massively produce the small pearls in a short time. CONSTITUTION: A culturing method of a pearl having nucleus comprises the steps of:inputting and fixing plural pearl nucleuses(2) in the 1st breathing hole(3) inside of the shell(1) of a shellfish having one shell or the inner shell side of the 7th breathing hole(4); and shielding the nucleus(2) of the pearl to produce the pearl.
Patent KR-20010038580-A (KR)
Title: Method for driving plasma display panel
Inventor: KANG GYEONG HO
IPC: G09G3/294
Filed: 1999-10-26
Abstract: PURPOSE: A method for driving a plasma display panel(PDP) is provided to increase the uniformity and the stability of a display by preventing a discharge display from not being occurred in pixels to be displayed of a specific sub field. CONSTITUTION: According to driving signals applied to a corresponding Y electrode line of each sub field in an address step of the second field of each frame, a scan is performed at the third time slot in the first sub-field(SF1) and the fifth sub-field(SF5), and a scan is performed at the fourth time slot in the second sub-field(SF2) and the sixth sub-field(SF6). And, a scan is performed at the first time slot in the third sub-field(SF3) and the seventh sub-field(SF7), and a scan is performed at the second time slot in the fourth sub-field(SF4) and the eighth sub-field(SF8).
Patent KR-20010044952-A (KR)
Inventor: HA JEONG GYUN
IPC: H01J1/30
Filed: 1999-11-01
Abstract: PURPOSE: A field emission display and a method of fabricating the display are provided which increases the emission site of a field emitter and sharpens the tip of the emitter to improve field emission characteristic and to reduce operation voltage. CONSTITUTION: A field emission display includes a cathode electrode(21) formed on a substrate(20), and a resistance layer(22) formed on the cathode electrode. An etched portion having a part of a sphere with a predetermined diameter is formed on the resistance layer. The field emission display further has an insulating layer(23) having the first hole formed on the resistance layer to expose the etched portion of the resistance layer, and a gate electrode(24) formed on the insulating layer to expose the etched portion of the resistance layer. The gate electrode has the second hole with the same diameter as the diameter of the first hole. The display also has an emitter tip(27) formed on the etched portion. The top of the emitter tip has a platform shape. The emitter tip is placed inside a gate hole formed of the etched portion, the first and second holes.
Patent KR-20010045712-A (KR)
Inventor: DEIBISEUN ISOBEL
IPC: H01M4/505
Filed: 1999-11-06
Abstract: PURPOSE: Provided is a lithium-manganese oxide having an orthorhombic structure, which is used as an active material for a cathode of a lithium secondary cell, therefore, the lithium secondary cell has an improved first chemical conversion speed, excellent charging or discharging properties, and excellent lifetime property. CONSTITUTION: The lithium-manganese oxide represented by the formula: Li(x)Me(y)Mn(1-y)O(2-z)Fz is produced by a process comprising the steps of: mixing and grinding lithium salts, manganese salts, and boron salts or gallium salts; adding the mixture to a reacting furnace and then eliminating oxygen from the furnace; calcining the mixture in the furnace at 400-650deg.C for 10-24 hours; heat-treating the resultant at 650-800deg.C for 24-48 hours. In the formula, Me is boron or gallium, x is 0.9-1.3, y is 0.02-0.25, and z is 0.05-0.2.
Patent KR-20000035380-A (KR)
Inventor: YASUMURA MASAYUKI
IPC: H02M3/338
Filed: 1999-11-10
Abstract: PURPOSE: A switching power supply circuit is provided to improve efficiency of power conversion, for lightweight of circuit. CONSTITUTION: A switching power supply circuit has an insulated converter transformer with a gap for a loose coupling. On the secondary side, a parallel resonant capacitor is connected parallel to a secondary winding, and a full-wave rectification circuit produces a secondary-side DC output voltage for increasing a maximum load power. On the primary side, an ordinary full-wave rectification circuit, rather than a voltage doubler rectifying circuit, inputs a rectified and smoothed voltage having a level corresponding to the level of an AC input voltage. A constant-voltage control circuit system for stabilizing a secondary output voltage varies a switching frequency depending on the level of the secondary output voltage to perform composite control over a resonant impedance of a primary parallel resonant circuit and a conduction angle of the switching element.
Patent KR-20010046278-A (KR)
Inventor: KIM GEON JIN
IPC: B60J1/02
Filed: 1999-11-11
Abstract: PURPOSE: A windshield supporting structure offers the assembling position independently with the assembling tolerance and the thickness tolerance of a windshield and improves the appearance of a windshield assembling portion of a car by minimizing the dispersion of a molding by heat distortion. CONSTITUTION: A windshield supporting structure comprises a roof panel(140), a spacer(130), a molding bracket(150) and a molding(120). The roof panel(140) has a flange(145) with multiple standard bolts(147) mounted thereon. The spacer(130) separates the windshield(110) from the flange(145) by fixed distance and fixes and supports the windshield(110) on the flange(145). The molding bracket(150) has multiple arranged holes corresponding to the standard bolts(147) and is fixed on the flange(145) of the roof panel(140) by inserting the standard bolts(147) into the arranged holes and fixing them. The molding(120) is supported by the molding bracket(150) and covers a chink between the windshield(110) and the roof panel(140).
Patent KR-20000006906-A (KR)
Title: Split and scroll circuit plate cellular phone having searching setting transmitting function
Inventor: PARK WAN KI
IPC: H04B1/38
Filed: 1999-11-11
Abstract: PURPOSE: A split and scroll circuit plate cellular phone is provided to have the improved searching setting transmitting function by establishing the circuit plate of a scroll structure. CONSTITUTION: A split and scroll circuit plate cellular phone has; a receiving speaker(6) projected at the upper part of a main body(1); a microphone(7) established at the lower part of the main body(1); a lid(10) to be opened at the upper layer of the main body(1); a supporting bar(12) of an antenna unit(11) installed at the center of the lid(10); small split circuit plate(20).
Patent KR-20000047752-A (KR)
Inventor: REGALIA ROBERTO
IPC: B29C48/36
Filed: 1999-11-29
Abstract: PURPOSE: A rotor of machine mixing an elastic polymer is provided which is able to maximize both dispersion work and distribution mixing work and also make optimal phase shift angle between two rotors being parallel mounted on the mixing machine. CONSTITUTION: In the rotor(5) of machine(1) which mixes an elastic polymer and comprises a first section which forms a thrusting flange(6) and has longer axial-directional length(L1) and a second section which forms a counter-thrusting flange(7) and has shorter axial-directional length(L2), at least one of the thrusting flange(6) and the counter-thrusting flange(7) have changeable entry angles(beta, delta) to the mixture according to their expansions.
Patent KR-20010053763-A (KR)
Inventor: CHOI YANG HUI
IPC: H04L12/58
Filed: 1999-12-01
Abstract: PURPOSE: A time synchronizing device of the Internet unilateral capacity measuring system using a wireless network is provided to correctly perform a synchronization between the Internet capacity measuring systems by using a base station GPS(Global Positioning System) receiver. CONSTITUTION: A GPS(Global Positioning System) receiver of a base station(103) receives not only geographical information but also time information from a GPS satellite(104), and transmits the time information to each wireless terminal(102). The time information of the GPS receiver is transmitted to the Internet capacity measuring transmitter(101) and the Internet capacity measuring receiver(106). The Internet capacity measuring transmitter(101) and the Internet capacity measuring receiver(106) use the inputted time information, and perform a synchronization. The Internet capacity measuring transmitter(101) and the Internet capacity measuring receiver(106) communicate with the each wireless terminal(102) by a serial interface, and store the time information as a system time. Unilateral capacity measuring elements measured from the Internet capacity measuring receiver(106) are transmitted to a capacity measuring server(105). The capacity measuring server(105) analyzes capacity measuring data.
Patent KR-20000012460-A (KR)
Inventor: JANG KI POONG
IPC: F23D14/00
Filed: 1999-12-06
Abstract: PURPOSE: A jet gas burner is provided to reduce the manufacturing cost according to the easiness of manufacturing and to prevent the clogging of a jetting hole of a nozzle due to the overflowed food. CONSTITUTION: The jet gas burner is composed of:a body(2) having a gas passage and a connecting part(8) connected with a gas pipe on its one side; many jetting nozzles(4) installed on the upper face of the body in vertical; many slope boards(6) placed in the front of the direction the gas is jetted from the jetting nozzle and battered with the gas jetted from the jetting nozzle.; Herein, the gas jetted from the jetting nozzle is battered against the slope and guided to the desired direction. The gas battered against the slope dispersed into many pairs of flames. Therefore, the thermal efficiency is improved.
Patent KR-20010054921-A (KR)
Inventor: MUN BU YONG
IPC: E05B83/18
Filed: 1999-12-08
Abstract: PURPOSE: A device for automatically opening a trunk for a car is provided to prevent accidents by simultaneously opening the trunk and lighting a lamp through the operation of a solenoid by sensing infrared energy emitted from men with an infrared sensor, determining whether or not there are the men through signal from the sensor by a controller and outputting control signal. CONSTITUTION: A device for automatically opening the trunk for the car includes an infrared sensor part(10) for sensing infrared energy emitted from men, a controller(20) having an amplifier(30) for amplifying signal sensed from the sensor part, a filter part(40) for removing noise from the amplified signal and a comparator(50) for comparing signal output from the filter part with a set value, a solenoid driving part(60) for opening through a relay operation by control signal output from the controller, and a lamp(70) for giving a driver warning signal by another control signal output from the controller.
Patent KR-20010055221-A (KR)
Inventor: JUNG GWANG JAE
IPC: G08B13/00
Filed: 1999-12-10
Abstract: PURPOSE: An apparatus and a method for providing a remote supervisory service by using Always On/Dynamic ISDN(AO/DI) is provided to reduce the cost of installation of the remote supervisory service, and to allow the property of a subscriber to be easily protected at an inexpensive cost. CONSTITUTION: The apparatus for providing the remote supervisory service comprises a supervisory system(100) installed in a building of a subscriber, a remote supervisory server(130) for generating an alarm sound by receiving still images and moving images from the supervisory system, an ISDN exchanger(110) installed between the supervisory system and the remote supervisory server for sending the still images or the moving images to the supervisory server, and a packet exchanger(120) installed between the ISDN exchanger and the remote supervisory server for sending the still images to the supervisory server.
Patent KR-20010055937-A (KR)
Inventor: JUNG JONG GUK
IPC: B25B11/02
Filed: 1999-12-13
Abstract: PURPOSE: A sub-assembling jig for a supercharger is provided to conveniently carry out the sub-assembling of the supercharger with precise bolt-coupling force with respect to the supercharger. CONSTITUTION: A sub-assembling jig for a supercharger includes a base(1) formed with a predetermined height and provided with a rubber plate(4) at a top part, a rotation die(2) positioned at a side of the base and having a rotation plate(5) for rotating by a handle(7), and a fixing die(3) having an arm(8) disposed concentrically with the rotation plate of the rotation die and moving back and forth for fixing the rotation plate to the supercharger and a conical arm head(9) rotatably mounted to an end of the arm to be coupled in a groove or a hole of the supercharger.
Patent KR-20010020108-A (KR)
Inventor: OH SE MIN
IPC: H01M4/583
Filed: 1999-12-21
Abstract: PURPOSE: A cathode active material for lithium secondary cell and method for manufacturing the same is provided to reduce specific surface area by uniformly mixing crystalline carbon and amorphous carbon. CONSTITUTION: A method comprises the first step of preparing amorphous carbon precursor solution by dissolving amorphous carbon precursor in organic solvent; the second step of coating crystalline carbon with the amorphous carbon precursor solution prepared in the first step; the third step of vacuum-drying, at a pressure of 10 Torr or lower, the crystalline carbon coated with the amorphous carbon precursor solution; and the fourth step of carbonizing the dried carbon under inert atmosphere at a temperature of 500 to 2000 °C. The cathode active material for lithium secondary cell manufactured by the method, includes a crystalline carbon core and a graphitizer metal formed onto the crystalline carbon core.
Patent KR-20010063597-A (KR)
Inventor: KIM CHANG YEONG
IPC: H01L29/786
Filed: 1999-12-23
Abstract: PURPOSE: A method for fabricating a thin film transistor is provided to improve the characteristics of the device by increasing breakdown voltage and by reducing leakage current of the thin film transistor using an insulation film of an ONO(Oxide-Nitride-Oxide) structure instead of an oxide as a gate insulation film. CONSTITUTION: A polysilicon film(2) for a gate electrode is formed on an interlayer insulation film, and the first oxide(5) and a nitride film(6) and the second oxide are formed on the interlayer insulation film(1) as a gate insulation film. And a polysilicon film(4) for a channel is formed on the second oxide. The polysilicon film for a gate electrode is a heavily doped polysilicon thin film. A source gas of a silicon is a SiH4 or Si2H6, and the silicon is deposited at a temperature of 450-800 deg.C and at a pressure of 0.1-1 torr as thick as 10-1000 angstrom. After patterning the polysilicon thin film, the oxide layer(5) is generated on the gate electrode by etching the patterned polysilicon thin film with a NH4OH solution containing HF and H2O2. Then, the nitride film is deposited as thick as 30-400 angstrom.
Patent KR-20010063998-A (KR)
Inventor: LEE JEONG RYEOL
IPC: H04B7/26
Filed: 1999-12-24
Abstract: PURPOSE: A method for correcting a reference time in a mobile communication system is provided to supply information relating to a propagation delay while transmitting the reference time to a terminal, so as to make data exactly arrive on the reference time. CONSTITUTION: If a call set is required from a terminal or a base station requires that the call is set to the terminal(S1), a mobile communication system calculates an RTD(Round Trip Delay) of a preamble transmitted from the terminal while setting a traffic channel(S2). The mobile communication system transmits a calculated RTD value to the terminal through the traffic channel(S3), and corrects a reference time of the terminal. The mobile communication system retrieves an RTD of a frame transmitted from the terminal every constant time interval(S4). If the RTD of the frame is over a preset threshold, the mobile communication system transmits the RTD to the terminal to correct the reference time(S5).
Patent KR-20010065377-A (KR)
Inventor: HAN CHUNG SU
IPC: H03F3/00
Filed: 1999-12-29
Abstract: PURPOSE: An active balun having symmetrical active load for small signals is provided which maintains impedances of two input ports of the active balun identical to each other to prevent generation of spurious signal, improving frequency response of the output terminal. CONSTITUTION: An active balun includes an amplification part(20) and an active load(30). The amplification part is constructed of the first FET(Q1) whose gate receives the first signal output from a mixer and whose source is connected to a constant current source(40), and the second FET(Q2) whose gate receives the second signal output from the mixer and whose source is connected to the source of the first FET and the constant current source. The active load includes the third FET(Q3) whose source is connected to the drain of the first FET, whose drain is connected to a power supply and whose gate and drain are connected to each other, and the fourth FET(Q4) whose source is connected to the drain of the second FET and outputs a signal, whose drain is connected to the power supply and whose gate is connected to the gate and drain of the third FET.
Patent KR-20010065453-A (KR)
Inventor: SHIN GWANG SEOP
IPC: B60R7/04
Filed: 1999-12-29
Abstract: PURPOSE: An opening/closing device of a glove box for a vehicle is provided to slowly open the glove box and to reduce a manufacturing cost. CONSTITUTION: A damper body(9) is installed in a lower mounting bracket of a housing. A leaf spring(11) is wound in a shaft(10) by forming the shaft(10) inside the damper body(9). A roller(12) is fixed in the leaf spring(11) and supported in the damper body(9). The roller(12) is installed around the leaf spring(11). A wire is wound in the roller(12). In opening the housing, the wire rotates the roller to loosen the leaf spring by tensioning. The leaf spring obstructs the rotation of the roller by a self-tension. Thereby, the housing is opened slowly. A manufacturing cost is reduced by controlling the opening speed of the housing only with the leaf spring, the roller and the wire.
Patent KR-20010065789-A (KR)
Inventor: LEE JONG GON
IPC: H01L21/336
Filed: 1999-12-30
Abstract: PURPOSE: A method for forming a dual gate oxide film is provided to easily control the threshold voltage between a thick gate oxide film and a thin gate oxide film. CONSTITUTION: The method for forming a dual gate oxide film implants ions into a semiconductor substrate(10) around a thin gate formation portion to form a well. A gate oxide film(20) is stacked on the resulting surface under wet atmosphere. A nitride oxide film(25) is stacked on the gate oxide film. A photoresist film is stacked on the resulting surface, through which the portion where a thin gate oxide film(35) will be formed is open. The nitride oxide film and the gate oxide film, which are stacked on the thin gate oxide formation, are etched by means of a cleaning process through the open portion of the photoresist film. After the photoresist film is removed, an oxide film is grown on the resulting surface to form the thin gate oxide film(35).
Patent KR-20000029466-A (KR)
Title: Conveyor belt for electronic parts
Inventor: MORI KAZUHIRO
IPC: H05K13/00
Filed: 1998-03-20
Abstract: PURPOSE: A conveyor belt for electronic parts is provided which permits conveyance of electronic parts such as IC packages in a favorably protective condition without sacrifice in convenience associated with carrier tapes. CONSTITUTION: A belt is a conveyor belt(T) formed of a web material(10) having a flexibility for holding a number of electronic parts(40) each composed of a part body(42) and projections(44) in spaced relationship in a lengthwise direction for conveyance. The belt is provided with support bases(20) spaced from one another in a lengthwise direction of the web material(10) and disposed to project from a surface of the web material, support surfaces(22) adapted to abut against the part bodies to support the electronic parts, openings(26) to extend to portions of both sides(24), in positions corresponding to the part bodies, of the support bases from the support surfaces, and lengths of adhesive tape(30) bonded at adhesive surfaces(32) on one side thereof to a back face of the web material, which include the support surfaces, along a lengthwise direction, with the adhesive surfaces partially exposed at the portions of the openings where the adhesive tape is bonded to the part bodies.